I have connect my PC and picozed through RJ45 connector, and set my PC and picozed in the same subnet. And PC 's IP is 192.168.3.1, the board is 192.168.3.2, there mask is 255.255.255.0. after that, I run the "ping 192.168.3.2"command in the dos window of PC, it can get response, but when i want to tansmit data from PC to board, the error occurred. it told me ,the hardware have no response. and I havd installed the add-on apps or plugs in the matlab. and the most important thing is my PC can not connect with the internet or router.wish you solution.thanks!